Plain-English guide

What Does a Non-Disclosure Agreement Actually Mean?

Q: Is an NDA enforceable if I was not paid to sign it?

It can be. Continued employment, access to the confidential information itself, or the business opportunity are often treated as the consideration. But an NDA signed with no benefit to you at all is weaker, and some states require continued employment or separate consideration.

Q: How long does an NDA last?

Whatever the agreement says — commonly 2 to 5 years, sometimes indefinite for true trade secrets. Check whether the clock starts at signing or at disclosure, and whether some categories of information are carved out as perpetual.

Q: What if I already knew the “confidential” information?

Standard NDAs exclude information you already knew, that becomes public through no fault of yours, or that you develop independently. If those exclusions are missing, the NDA is broader than normal — push back.

An NDA looks like a formality — until it limits what you can say, where you can work, or what you can build. Here is how to read one before you sign.

What counts as "confidential"?

This is the heart of the agreement. A reasonable NDA defines confidential information with some specificity — business plans, customer lists, source code, financials — and ideally requires it to be marked or identified as confidential. A red flag is a definition so broad it covers "any information disclosed," including things said casually in a hallway. The broader the definition, the more of your future speech is restricted, so vague definitions deserve pushback.

Mutual or one-sided?

A mutual NDA binds both sides equally — standard when two companies explore a partnership. A one-sided NDA binds only you — standard when you are joining a company or interviewing. The problem is a document labeled "mutual" that is one-sided in substance: check whether the obligations, exclusions, and remedies actually apply to both parties or just to you.

How long does it last?

Two clocks matter: how long the duty to keep things secret lasts (commonly 2 to 5 years, sometimes indefinite for genuine trade secrets), and how long the agreement itself covers new disclosures. Check whether the secrecy clock starts at signing or at each disclosure — it makes a real difference. Perpetual secrecy for everything, including ordinary business chatter, is heavier than normal.

The exclusions that should be there

A fair NDA carves out information that: you already knew, becomes public through no fault of yours, you receive from a third party without restriction, you develop independently, or you are legally compelled to disclose (with notice so the other side can object). Missing exclusions are one of the clearest signs of an overreaching NDA. Also look for the right to disclose to your own lawyer and advisors — its absence is a red flag.

What happens if you breach

Look for the remedies section: can they get an injunction (a court order stopping you) without proving damages? Is there a fixed penalty per breach? Do you have to pay their legal fees if they sue you, even if you win? One-sided fee clauses and uncapped penalties turn a paperwork formality into a serious financial risk.

Red flags to watch for

"Confidential information" defined as literally everything disclosed, with no marking requirement.
No exclusions for information you already knew or that becomes public.
Perpetual secrecy obligations for ordinary business information.
A "non-compete" or "non-solicit" smuggled into an NDA — those deserve their own negotiation.
You pay their legal fees if there is any dispute, win or lose.
No right to disclose to your attorney.
Obligations that survive far beyond any business relationship.

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Common questions

Is an NDA enforceable if I wasn't paid to sign it?

It can be. Continued employment, access to the information itself, or the business opportunity are often treated as the consideration. But an NDA signed with no benefit to you is weaker, and some states require separate consideration.

How long does an NDA last?

Whatever the agreement says — commonly 2 to 5 years of secrecy, sometimes indefinite for true trade secrets. Check whether the clock starts at signing or at each disclosure.

Can I talk to a lawyer about something under NDA?

Almost always yes. Most NDAs expressly permit disclosure to legal counsel, and attorney-client communications are privileged anyway. If yours lacks that carve-out, question it.

What if I already knew the "confidential" information?

Standard NDAs exclude it. If the exclusions for prior knowledge, public information, or independent development are missing, the NDA is broader than normal — push back.

Not legal advice. This guide explains what the words in a non-disclosure agreement typically mean in plain English. Know the Fine Print is not a lawyer, and this is not legal advice. For decisions with real consequences, talk to a licensed attorney.